Home / 2,389.45-3,582.80-926.89

Finding the Fourth Proportional to 2,389.45, 3,582.80 and 926.89

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Solution

The fourth proportional to 2,389.45, 3,582.80 and 926.89 is: 1,389.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.45 : 3,582.80 = 926.89 : x
  2. Step 2: Convert to fraction form
    2,389.45/3,582.80 = 926.89/x
  3. Step 3: Cross multiply
    2,389.45x = 3,582.80 × 926.89
  4. Step 4: Simplify right side
    2,389.45x = 3,320,843.58
  5. Step 5: Solve for x
    x = 3,320,843.58/2,389.45
  6. Step 6: Final answer
    x = 1,389.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.